#ifdef __linux
#include <string.h>
#endif
#include "mdbCCryptDES.h"   

using namespace std;

static const DES_LONG lDesSkbArry[8][64]={
{
   /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
   0x00000000L,0x00000010L,0x20000000L,0x20000010L,
   0x00010000L,0x00010010L,0x20010000L,0x20010010L,
   0x00000800L,0x00000810L,0x20000800L,0x20000810L,
   0x00010800L,0x00010810L,0x20010800L,0x20010810L,
   0x00000020L,0x00000030L,0x20000020L,0x20000030L,
   0x00010020L,0x00010030L,0x20010020L,0x20010030L,
   0x00000820L,0x00000830L,0x20000820L,0x20000830L,
   0x00010820L,0x00010830L,0x20010820L,0x20010830L,
   0x00080000L,0x00080010L,0x20080000L,0x20080010L,
   0x00090000L,0x00090010L,0x20090000L,0x20090010L,
   0x00080800L,0x00080810L,0x20080800L,0x20080810L,
   0x00090800L,0x00090810L,0x20090800L,0x20090810L,
   0x00080020L,0x00080030L,0x20080020L,0x20080030L,
   0x00090020L,0x00090030L,0x20090020L,0x20090030L,
   0x00080820L,0x00080830L,0x20080820L,0x20080830L,
   0x00090820L,0x00090830L,0x20090820L,0x20090830L,
   },{
   /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
   0x00000000L,0x02000000L,0x00002000L,0x02002000L,
   0x00200000L,0x02200000L,0x00202000L,0x02202000L,
   0x00000004L,0x02000004L,0x00002004L,0x02002004L,
   0x00200004L,0x02200004L,0x00202004L,0x02202004L,
   0x00000400L,0x02000400L,0x00002400L,0x02002400L,
   0x00200400L,0x02200400L,0x00202400L,0x02202400L,
   0x00000404L,0x02000404L,0x00002404L,0x02002404L,
   0x00200404L,0x02200404L,0x00202404L,0x02202404L,
   0x10000000L,0x12000000L,0x10002000L,0x12002000L,
   0x10200000L,0x12200000L,0x10202000L,0x12202000L,
   0x10000004L,0x12000004L,0x10002004L,0x12002004L,
   0x10200004L,0x12200004L,0x10202004L,0x12202004L,
   0x10000400L,0x12000400L,0x10002400L,0x12002400L,
   0x10200400L,0x12200400L,0x10202400L,0x12202400L,
   0x10000404L,0x12000404L,0x10002404L,0x12002404L,
   0x10200404L,0x12200404L,0x10202404L,0x12202404L,
   },{
   /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
   0x00000000L,0x00000001L,0x00040000L,0x00040001L,
   0x01000000L,0x01000001L,0x01040000L,0x01040001L,
   0x00000002L,0x00000003L,0x00040002L,0x00040003L,
   0x01000002L,0x01000003L,0x01040002L,0x01040003L,
   0x00000200L,0x00000201L,0x00040200L,0x00040201L,
   0x01000200L,0x01000201L,0x01040200L,0x01040201L,
   0x00000202L,0x00000203L,0x00040202L,0x00040203L,
   0x01000202L,0x01000203L,0x01040202L,0x01040203L,
   0x08000000L,0x08000001L,0x08040000L,0x08040001L,
   0x09000000L,0x09000001L,0x09040000L,0x09040001L,
   0x08000002L,0x08000003L,0x08040002L,0x08040003L,
   0x09000002L,0x09000003L,0x09040002L,0x09040003L,
   0x08000200L,0x08000201L,0x08040200L,0x08040201L,
   0x09000200L,0x09000201L,0x09040200L,0x09040201L,
   0x08000202L,0x08000203L,0x08040202L,0x08040203L,
   0x09000202L,0x09000203L,0x09040202L,0x09040203L,
   },{
   /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
   0x00000000L,0x00100000L,0x00000100L,0x00100100L,
   0x00000008L,0x00100008L,0x00000108L,0x00100108L,
   0x00001000L,0x00101000L,0x00001100L,0x00101100L,
   0x00001008L,0x00101008L,0x00001108L,0x00101108L,
   0x04000000L,0x04100000L,0x04000100L,0x04100100L,
   0x04000008L,0x04100008L,0x04000108L,0x04100108L,
   0x04001000L,0x04101000L,0x04001100L,0x04101100L,
   0x04001008L,0x04101008L,0x04001108L,0x04101108L,
   0x00020000L,0x00120000L,0x00020100L,0x00120100L,
   0x00020008L,0x00120008L,0x00020108L,0x00120108L,
   0x00021000L,0x00121000L,0x00021100L,0x00121100L,
   0x00021008L,0x00121008L,0x00021108L,0x00121108L,
   0x04020000L,0x04120000L,0x04020100L,0x04120100L,
   0x04020008L,0x04120008L,0x04020108L,0x04120108L,
   0x04021000L,0x04121000L,0x04021100L,0x04121100L,
   0x04021008L,0x04121008L,0x04021108L,0x04121108L,
   },{
   /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
   0x00000000L,0x10000000L,0x00010000L,0x10010000L,
   0x00000004L,0x10000004L,0x00010004L,0x10010004L,
   0x20000000L,0x30000000L,0x20010000L,0x30010000L,
   0x20000004L,0x30000004L,0x20010004L,0x30010004L,
   0x00100000L,0x10100000L,0x00110000L,0x10110000L,
   0x00100004L,0x10100004L,0x00110004L,0x10110004L,
   0x20100000L,0x30100000L,0x20110000L,0x30110000L,
   0x20100004L,0x30100004L,0x20110004L,0x30110004L,
   0x00001000L,0x10001000L,0x00011000L,0x10011000L,
   0x00001004L,0x10001004L,0x00011004L,0x10011004L,
   0x20001000L,0x30001000L,0x20011000L,0x30011000L,
   0x20001004L,0x30001004L,0x20011004L,0x30011004L,
   0x00101000L,0x10101000L,0x00111000L,0x10111000L,
   0x00101004L,0x10101004L,0x00111004L,0x10111004L,
   0x20101000L,0x30101000L,0x20111000L,0x30111000L,
   0x20101004L,0x30101004L,0x20111004L,0x30111004L,
   },{
   /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
   0x00000000L,0x08000000L,0x00000008L,0x08000008L,
   0x00000400L,0x08000400L,0x00000408L,0x08000408L,
   0x00020000L,0x08020000L,0x00020008L,0x08020008L,
   0x00020400L,0x08020400L,0x00020408L,0x08020408L,
   0x00000001L,0x08000001L,0x00000009L,0x08000009L,
   0x00000401L,0x08000401L,0x00000409L,0x08000409L,
   0x00020001L,0x08020001L,0x00020009L,0x08020009L,
   0x00020401L,0x08020401L,0x00020409L,0x08020409L,
   0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
   0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
   0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
   0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
   0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
   0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
   0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
   0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
   },{
   /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
   0x00000000L,0x00000100L,0x00080000L,0x00080100L,
   0x01000000L,0x01000100L,0x01080000L,0x01080100L,
   0x00000010L,0x00000110L,0x00080010L,0x00080110L,
   0x01000010L,0x01000110L,0x01080010L,0x01080110L,
   0x00200000L,0x00200100L,0x00280000L,0x00280100L,
   0x01200000L,0x01200100L,0x01280000L,0x01280100L,
   0x00200010L,0x00200110L,0x00280010L,0x00280110L,
   0x01200010L,0x01200110L,0x01280010L,0x01280110L,
   0x00000200L,0x00000300L,0x00080200L,0x00080300L,
   0x01000200L,0x01000300L,0x01080200L,0x01080300L,
   0x00000210L,0x00000310L,0x00080210L,0x00080310L,
   0x01000210L,0x01000310L,0x01080210L,0x01080310L,
   0x00200200L,0x00200300L,0x00280200L,0x00280300L,
   0x01200200L,0x01200300L,0x01280200L,0x01280300L,
   0x00200210L,0x00200310L,0x00280210L,0x00280310L,
   0x01200210L,0x01200310L,0x01280210L,0x01280310L,
   },{
   /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
   0x00000000L,0x04000000L,0x00040000L,0x04040000L,
   0x00000002L,0x04000002L,0x00040002L,0x04040002L,
   0x00002000L,0x04002000L,0x00042000L,0x04042000L,
   0x00002002L,0x04002002L,0x00042002L,0x04042002L,
   0x00000020L,0x04000020L,0x00040020L,0x04040020L,
   0x00000022L,0x04000022L,0x00040022L,0x04040022L,
   0x00002020L,0x04002020L,0x00042020L,0x04042020L,
   0x00002022L,0x04002022L,0x00042022L,0x04042022L,
   0x00000800L,0x04000800L,0x00040800L,0x04040800L,
   0x00000802L,0x04000802L,0x00040802L,0x04040802L,
   0x00002800L,0x04002800L,0x00042800L,0x04042800L,
   0x00002802L,0x04002802L,0x00042802L,0x04042802L,
   0x00000820L,0x04000820L,0x00040820L,0x04040820L,
   0x00000822L,0x04000822L,0x00040822L,0x04040822L,
   0x00002820L,0x04002820L,0x00042820L,0x04042820L,
   0x00002822L,0x04002822L,0x00042822L,0x04042822L,
}};

static const DES_LONG lDesSPtransArry[8][64]={
{
   /* nibble 0 */
   0x00820200L, 0x00020000L, 0x80800000L, 0x80820200L,
   0x00800000L, 0x80020200L, 0x80020000L, 0x80800000L,
   0x80020200L, 0x00820200L, 0x00820000L, 0x80000200L,
   0x80800200L, 0x00800000L, 0x00000000L, 0x80020000L,
   0x00020000L, 0x80000000L, 0x00800200L, 0x00020200L,
   0x80820200L, 0x00820000L, 0x80000200L, 0x00800200L,
   0x80000000L, 0x00000200L, 0x00020200L, 0x80820000L,
   0x00000200L, 0x80800200L, 0x80820000L, 0x00000000L,
   0x00000000L, 0x80820200L, 0x00800200L, 0x80020000L,
   0x00820200L, 0x00020000L, 0x80000200L, 0x00800200L,
   0x80820000L, 0x00000200L, 0x00020200L, 0x80800000L,
   0x80020200L, 0x80000000L, 0x80800000L, 0x00820000L,
   0x80820200L, 0x00020200L, 0x00820000L, 0x80800200L,
   0x00800000L, 0x80000200L, 0x80020000L, 0x00000000L,
   0x00020000L, 0x00800000L, 0x80800200L, 0x00820200L,
   0x80000000L, 0x80820000L, 0x00000200L, 0x80020200L,
   },{
   /* nibble 1 */
   0x10042004L, 0x00000000L, 0x00042000L, 0x10040000L,
   0x10000004L, 0x00002004L, 0x10002000L, 0x00042000L,
   0x00002000L, 0x10040004L, 0x00000004L, 0x10002000L,
   0x00040004L, 0x10042000L, 0x10040000L, 0x00000004L,
   0x00040000L, 0x10002004L, 0x10040004L, 0x00002000L,
   0x00042004L, 0x10000000L, 0x00000000L, 0x00040004L,
   0x10002004L, 0x00042004L, 0x10042000L, 0x10000004L,
   0x10000000L, 0x00040000L, 0x00002004L, 0x10042004L,
   0x00040004L, 0x10042000L, 0x10002000L, 0x00042004L,
   0x10042004L, 0x00040004L, 0x10000004L, 0x00000000L,
   0x10000000L, 0x00002004L, 0x00040000L, 0x10040004L,
   0x00002000L, 0x10000000L, 0x00042004L, 0x10002004L,
   0x10042000L, 0x00002000L, 0x00000000L, 0x10000004L,
   0x00000004L, 0x10042004L, 0x00042000L, 0x10040000L,
   0x10040004L, 0x00040000L, 0x00002004L, 0x10002000L,
   0x10002004L, 0x00000004L, 0x10040000L, 0x00042000L,
   },{
   /* nibble 2 */
   0x41000000L, 0x01010040L, 0x00000040L, 0x41000040L,
   0x40010000L, 0x01000000L, 0x41000040L, 0x00010040L,
   0x01000040L, 0x00010000L, 0x01010000L, 0x40000000L,
   0x41010040L, 0x40000040L, 0x40000000L, 0x41010000L,
   0x00000000L, 0x40010000L, 0x01010040L, 0x00000040L,
   0x40000040L, 0x41010040L, 0x00010000L, 0x41000000L,
   0x41010000L, 0x01000040L, 0x40010040L, 0x01010000L,
   0x00010040L, 0x00000000L, 0x01000000L, 0x40010040L,
   0x01010040L, 0x00000040L, 0x40000000L, 0x00010000L,
   0x40000040L, 0x40010000L, 0x01010000L, 0x41000040L,
   0x00000000L, 0x01010040L, 0x00010040L, 0x41010000L,
   0x40010000L, 0x01000000L, 0x41010040L, 0x40000000L,
   0x40010040L, 0x41000000L, 0x01000000L, 0x41010040L,
   0x00010000L, 0x01000040L, 0x41000040L, 0x00010040L,
   0x01000040L, 0x00000000L, 0x41010000L, 0x40000040L,
   0x41000000L, 0x40010040L, 0x00000040L, 0x01010000L,
   },{
   /* nibble 3 */
   0x00100402L, 0x04000400L, 0x00000002L, 0x04100402L,
   0x00000000L, 0x04100000L, 0x04000402L, 0x00100002L,
   0x04100400L, 0x04000002L, 0x04000000L, 0x00000402L,
   0x04000002L, 0x00100402L, 0x00100000L, 0x04000000L,
   0x04100002L, 0x00100400L, 0x00000400L, 0x00000002L,
   0x00100400L, 0x04000402L, 0x04100000L, 0x00000400L,
   0x00000402L, 0x00000000L, 0x00100002L, 0x04100400L,
   0x04000400L, 0x04100002L, 0x04100402L, 0x00100000L,
   0x04100002L, 0x00000402L, 0x00100000L, 0x04000002L,
   0x00100400L, 0x04000400L, 0x00000002L, 0x04100000L,
   0x04000402L, 0x00000000L, 0x00000400L, 0x00100002L,
   0x00000000L, 0x04100002L, 0x04100400L, 0x00000400L,
   0x04000000L, 0x04100402L, 0x00100402L, 0x00100000L,
   0x04100402L, 0x00000002L, 0x04000400L, 0x00100402L,
   0x00100002L, 0x00100400L, 0x04100000L, 0x04000402L,
   0x00000402L, 0x04000000L, 0x04000002L, 0x04100400L,
   },{
   /* nibble 4 */
   0x02000000L, 0x00004000L, 0x00000100L, 0x02004108L,
   0x02004008L, 0x02000100L, 0x00004108L, 0x02004000L,
   0x00004000L, 0x00000008L, 0x02000008L, 0x00004100L,
   0x02000108L, 0x02004008L, 0x02004100L, 0x00000000L,
   0x00004100L, 0x02000000L, 0x00004008L, 0x00000108L,
   0x02000100L, 0x00004108L, 0x00000000L, 0x02000008L,
   0x00000008L, 0x02000108L, 0x02004108L, 0x00004008L,
   0x02004000L, 0x00000100L, 0x00000108L, 0x02004100L,
   0x02004100L, 0x02000108L, 0x00004008L, 0x02004000L,
   0x00004000L, 0x00000008L, 0x02000008L, 0x02000100L,
   0x02000000L, 0x00004100L, 0x02004108L, 0x00000000L,
   0x00004108L, 0x02000000L, 0x00000100L, 0x00004008L,
   0x02000108L, 0x00000100L, 0x00000000L, 0x02004108L,
   0x02004008L, 0x02004100L, 0x00000108L, 0x00004000L,
   0x00004100L, 0x02004008L, 0x02000100L, 0x00000108L,
   0x00000008L, 0x00004108L, 0x02004000L, 0x02000008L,
   },{
   /* nibble 5 */
   0x20000010L, 0x00080010L, 0x00000000L, 0x20080800L,
   0x00080010L, 0x00000800L, 0x20000810L, 0x00080000L,
   0x00000810L, 0x20080810L, 0x00080800L, 0x20000000L,
   0x20000800L, 0x20000010L, 0x20080000L, 0x00080810L,
   0x00080000L, 0x20000810L, 0x20080010L, 0x00000000L,
   0x00000800L, 0x00000010L, 0x20080800L, 0x20080010L,
   0x20080810L, 0x20080000L, 0x20000000L, 0x00000810L,
   0x00000010L, 0x00080800L, 0x00080810L, 0x20000800L,
   0x00000810L, 0x20000000L, 0x20000800L, 0x00080810L,
   0x20080800L, 0x00080010L, 0x00000000L, 0x20000800L,
   0x20000000L, 0x00000800L, 0x20080010L, 0x00080000L,
   0x00080010L, 0x20080810L, 0x00080800L, 0x00000010L,
   0x20080810L, 0x00080800L, 0x00080000L, 0x20000810L,
   0x20000010L, 0x20080000L, 0x00080810L, 0x00000000L,
   0x00000800L, 0x20000010L, 0x20000810L, 0x20080800L,
   0x20080000L, 0x00000810L, 0x00000010L, 0x20080010L,
   },{
   /* nibble 6 */
   0x00001000L, 0x00000080L, 0x00400080L, 0x00400001L,
   0x00401081L, 0x00001001L, 0x00001080L, 0x00000000L,
   0x00400000L, 0x00400081L, 0x00000081L, 0x00401000L,
   0x00000001L, 0x00401080L, 0x00401000L, 0x00000081L,
   0x00400081L, 0x00001000L, 0x00001001L, 0x00401081L,
   0x00000000L, 0x00400080L, 0x00400001L, 0x00001080L,
   0x00401001L, 0x00001081L, 0x00401080L, 0x00000001L,
   0x00001081L, 0x00401001L, 0x00000080L, 0x00400000L,
   0x00001081L, 0x00401000L, 0x00401001L, 0x00000081L,
   0x00001000L, 0x00000080L, 0x00400000L, 0x00401001L,
   0x00400081L, 0x00001081L, 0x00001080L, 0x00000000L,
   0x00000080L, 0x00400001L, 0x00000001L, 0x00400080L,
   0x00000000L, 0x00400081L, 0x00400080L, 0x00001080L,
   0x00000081L, 0x00001000L, 0x00401081L, 0x00400000L,
   0x00401080L, 0x00000001L, 0x00001001L, 0x00401081L,
   0x00400001L, 0x00401080L, 0x00401000L, 0x00001001L,
   },{
   /* nibble 7 */
   0x08200020L, 0x08208000L, 0x00008020L, 0x00000000L,
   0x08008000L, 0x00200020L, 0x08200000L, 0x08208020L,
   0x00000020L, 0x08000000L, 0x00208000L, 0x00008020L,
   0x00208020L, 0x08008020L, 0x08000020L, 0x08200000L,
   0x00008000L, 0x00208020L, 0x00200020L, 0x08008000L,
   0x08208020L, 0x08000020L, 0x00000000L, 0x00208000L,
   0x08000000L, 0x00200000L, 0x08008020L, 0x08200020L,
   0x00200000L, 0x00008000L, 0x08208000L, 0x00000020L,
   0x00200000L, 0x00008000L, 0x08000020L, 0x08208020L,
   0x00008020L, 0x08000000L, 0x00000000L, 0x00208000L,
   0x08200020L, 0x08008020L, 0x08008000L, 0x00200020L,
   0x08208000L, 0x00000020L, 0x00200020L, 0x08008000L,
   0x08208020L, 0x00200000L, 0x08200000L, 0x08000020L,
   0x00208000L, 0x00008020L, 0x08008020L, 0x08200000L,
   0x00000020L, 0x08208000L, 0x00208020L, 0x00000000L,
   0x08000000L, 0x08200020L, 0x00008000L, 0x00208020L,
}};

static const unsigned char OddParityArry[256]={
   1,  1,  2,  2,  4,  4,  7,  7,  8,  8, 11, 11, 13, 13, 14, 14,
   16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
   32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
   49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
   64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
   81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
   97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
   112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
   128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
   145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
   161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
   176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
   193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
   208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
   224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
   241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};

static ucDesLock ucWeakKeyArry[NUM_WEAK_KEY]={
    /* weak keys */
    {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
    {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
    {0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F},
    {0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0},
    /* semi-weak keys */
    {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
    {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
    {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
    {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
    {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
    {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
    {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
    {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
    {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
    {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
    {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
    {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
    
static const char KeyDataArry[3][8]={
    {'\xF4','\x88','\xFD','\x58','\x4E','\x49','\xDB','\xCD'},
    {'\x20','\xB4','\x9D','\xE4','\x91','\x07','\x36','\x6B'},
    {'\x33','\x6C','\x38','\x0D','\x45','\x1D','\x0F','\x7C'},
};

static int iShiftArry[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};

#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
                           (b)^=(t),\
                           (a)^=((t)<<(n)))
    
#define HPERM_OP(a,t,n,m)  ((t)=((((a)<<(16-(n)))^(a))&(m)),\
                           (a)=(a)^(t)^(t>>(16-(n))))

#define IP(l,r) \
                      { \
                        register DES_LONG tt; \
                        PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
                        PERM_OP(l,r,tt,16,0x0000ffffL); \
                        PERM_OP(r,l,tt, 2,0x33333333L); \
                        PERM_OP(l,r,tt, 8,0x00ff00ffL); \
                        PERM_OP(r,l,tt, 1,0x55555555L); \
                      }
    
#define FP(l,r) \
                        { \
                         register DES_LONG tt; \
                         PERM_OP(l,r,tt, 1,0x55555555L); \
                         PERM_OP(r,l,tt, 8,0x00ff00ffL); \
                         PERM_OP(l,r,tt, 2,0x33333333L); \
                         PERM_OP(r,l,tt,16,0x0000ffffL); \
                         PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
                        }
    
#define l2c(l,c)         (*((c)++)=(unsigned char)(((l)     )&0xff), \
                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
                          *((c)++)=(unsigned char)(((l)>>24L)&0xff))
                          
#define c2l(c,l) \
                         (l =((DES_LONG)(*((c)++)))    , \
                          l|=((DES_LONG)(*((c)++)))<< 8L, \
                          l|=((DES_LONG)(*((c)++)))<<16L, \
                          l|=((DES_LONG)(*((c)++)))<<24L)
    
#define D_ENCRYPT(Q,R,S) {\
                          u=(R^s[S  ]); \
                          t=R^s[S+1]; \
                          t=((t>>4L)+(t<<28L)); \
                          Q^= lDesSPtransArry[1][(t     )&0x3f]| \
                              lDesSPtransArry[3][(t>> 8L)&0x3f]| \
                              lDesSPtransArry[5][(t>>16L)&0x3f]| \
                              lDesSPtransArry[7][(t>>24L)&0x3f]| \
                              lDesSPtransArry[0][(u     )&0x3f]| \
                              lDesSPtransArry[2][(u>> 8L)&0x3f]| \
                              lDesSPtransArry[4][(u>>16L)&0x3f]| \
                              lDesSPtransArry[6][(u>>24L)&0x3f]; \
                         }

TMdbCCryptDES::TMdbCCryptDES()
{
    m_iDesKey=0;
};


int TMdbCCryptDES::Encrypt(const char *pszSrc,char *pszKey)
{
    char sSecretBuf[MAX_TEXT_LEN];
    DesStream(pszSrc,sSecretBuf,strlen(pszSrc),DES_ENCRYPT);
    BINtoBinASCII((unsigned char *)sSecretBuf,(unsigned char *)pszKey,(strlen(pszSrc)/8+1)*8);
    return 0;
}

int TMdbCCryptDES::Decrypt(const char *pszKey,char *pszSrc)
{
    char sSecretBuf[MAX_TEXT_LEN];
    BinASCIItoBIN((unsigned char *)pszKey,(unsigned char *)sSecretBuf);
    DesStream(sSecretBuf,pszSrc,(strlen(pszKey)+1)/2,0);
    return 0;
} 

void TMdbCCryptDES::DesEncrypt2(DES_LONG * data, STKeySchedule ks, int encrypt)
{
    register DES_LONG l,r,t,u;
#ifdef DES_USE_PTR
    register unsigned char *des_SP=(unsigned char *)lDesSPtransArry;
#endif
#ifdef MSDOS
    union fudge {
        DES_LONG  l;
        unsigned short s[2];
        unsigned char  c[4];
        } U,T;
#endif
    register int i;
    register DES_LONG *s;

    u=data[0];
    r=data[1];


    l=(r<<1)|(r>>31);
    r=(u<<1)|(u>>31);

    l&=0xffffffffL;
    r&=0xffffffffL;

    s=(DES_LONG *)ks;
    if (encrypt)
    {
            for (i=0; i<32; i+=4)
            {
                D_ENCRYPT(l,r,i+0); 
                D_ENCRYPT(r,l,i+2); 
            }
    }
    else
    {
        for (i=30; i>0; i-=4)
        {
            D_ENCRYPT(l,r,i-0); 
            D_ENCRYPT(r,l,i-2); 
        }
    }
    l=(l>>1)|(l<<31);
    r=(r>>1)|(r<<31);
    l&=0xffffffffL;
    r&=0xffffffffL;

    data[0]=l;
    data[1]=r;
    l=r=t=u=0;
}

void TMdbCCryptDES::DesEcb3Encrypt(ucDesLock * input, ucDesLock * output, 
                               STKeySchedule ks1, STKeySchedule ks2, STKeySchedule ks3,
                               int encrypt)
{
    register DES_LONG l0,l1;
    register unsigned char *in,*out;
    DES_LONG ll[2];

    in=(unsigned char *)input;
    out=(unsigned char *)output;
    c2l(in,l0);
    c2l(in,l1);
    IP(l0,l1);
    ll[0]=l0;
    ll[1]=l1;
    DesEncrypt2(ll,ks1,encrypt);
    DesEncrypt2(ll,ks2,!encrypt);
    DesEncrypt2(ll,ks3,encrypt);
    l0=ll[0];
    l1=ll[1];
    FP(l1,l0);
    l2c(l0,out);
    l2c(l1,out);
}

/* return 0 if key parity is odd (correct),
 * return -1 if key parity error,
 * return -2 if illegal weak key.
 */
int TMdbCCryptDES::DesSetKey(ucDesLock * key, STKeySchedule schedule)
{
    register DES_LONG c,d,t,s;
    register unsigned char *in;
    register DES_LONG *k;
    register int i;

    if (m_iDesKey)
    {
        for (int x=0; x<DES_KEY_SZ; x++)
        {
           if ((*key)[x] != OddParityArry[(*key)[x]])
            return(-1);
        }
        
        for (int x=0; x<NUM_WEAK_KEY; x++)
        {
            /* Added == 0 to comparision, I obviously don't run
             * this section very often :-(, thanks to
             * engineering@MorningStar.Com for the fix
             * eay 93/06/29 */
            if (memcmp(ucWeakKeyArry[x],key,sizeof(key)) == 0) 
            {
                return(-2);
            }

        }
    }

    k=(DES_LONG *)schedule;
    in=(unsigned char *)key;

    c2l(in,c);
    c2l(in,d);

    /* I now do it in 47 simple operations :-)
     * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
     * for the inspiration. :-) */
    PERM_OP (d,c,t,4,0x0f0f0f0fL);
    HPERM_OP(c,t,-2,0xcccc0000L);
    HPERM_OP(d,t,-2,0xcccc0000L);
    PERM_OP (d,c,t,1,0x55555555L);
    PERM_OP (c,d,t,8,0x00ff00ffL);
    PERM_OP (d,c,t,1,0x55555555L);
    d=    (((d&0x000000ffL)<<16L)| (d&0x0000ff00L)     |
         ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
    c&=0x0fffffffL;

    for (i=0; i<ITERATIONS; i++)
    {
        if (iShiftArry[i])
            { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
        else
            { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
        c&=0x0fffffffL;
        d&=0x0fffffffL;
        /* could be a few less shifts but I am to lazy at this
         * point in time to investigate */
        s=  lDesSkbArry[0][ (c    )&0x3f                ]|
            lDesSkbArry[1][((c>> 6)&0x03)|((c>> 7L)&0x3c)]|
            lDesSkbArry[2][((c>>13)&0x0f)|((c>>14L)&0x30)]|
            lDesSkbArry[3][((c>>20)&0x01)|((c>>21L)&0x06) |
                          ((c>>22L)&0x38)];
        t=  lDesSkbArry[4][ (d    )&0x3f                ]|
            lDesSkbArry[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
            lDesSkbArry[6][ (d>>15L)&0x3f                ]|
            lDesSkbArry[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];

        /* table contained 0213 4657 */
        *(k++)=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
        s=     ((s>>16L)|(t&0xffff0000L));
        
        s=(s<<4L)|(s>>28L);
        *(k++)=s&0xffffffffL;
    }
    return(0);
}

int TMdbCCryptDES::DesDecrypt(const char * sIn, char * sOut, int iLen,
                          const char * sKey1, const char * sKey2, const char * sKey3)
{
    int iBlockCount = iLen / DES_BLOCKSIZE;
    STKeySchedule stKs1, stKs2, stKs3;

    if( iLen % DES_BLOCKSIZE )
        return( -1 );

    DesSetKey((C_DES_BLOCK *)(sKey1), stKs1);
    DesSetKey((C_DES_BLOCK *)(sKey2), stKs2);
    DesSetKey((C_DES_BLOCK *)(sKey3), stKs3);

    while( iBlockCount-- )
    {
        DesEcb3Encrypt((C_DES_BLOCK *)sIn, (C_DES_BLOCK *)sOut, stKs1, stKs2, stKs3, DES_DECRYPT);
        sIn  += DES_BLOCKSIZE;
        sOut += DES_BLOCKSIZE;
    }

    return 1;
}

int TMdbCCryptDES::DesEncrypt(const char * sIn, char * sOut, int iLen,
                          const char * sKey1, const char * sKey2, const char * sKey3)
{
    int iBlockCount = iLen / DES_BLOCKSIZE;
    STKeySchedule stKs1, stKs2, stKs3;

    if( iLen % DES_BLOCKSIZE )
        return( -1 );

    DesSetKey((C_DES_BLOCK *)(sKey1), stKs1);
    DesSetKey((C_DES_BLOCK *)(sKey2), stKs2);
    DesSetKey((C_DES_BLOCK *)(sKey3), stKs3);

    while( iBlockCount-- )
    {
        DesEcb3Encrypt((C_DES_BLOCK *)sIn, (C_DES_BLOCK *)sOut, stKs1, stKs2, stKs3, DES_ENCRYPT);
        sIn  += DES_BLOCKSIZE;
        sOut += DES_BLOCKSIZE;
    }
    return 1;
}

int TMdbCCryptDES::DesStream(const char *iBuf,char *oBuf,int iBufLen,int iMode)
{
    int blockCount = iBufLen / DES_BLOCKSIZE;
    int tail=iBufLen % DES_BLOCKSIZE;
    int SucessFlag;
    int i;
    unsigned char FillItem;
    int FillFlag;
    int OutStrLen;
    char * iBufTemp=(char *)malloc((blockCount+1)*DES_BLOCKSIZE);
    if(iMode == DES_ENCRYPT)
    {
        memset(oBuf,0,(blockCount+1)*DES_BLOCKSIZE);
        FillItem=DES_BLOCKSIZE-(unsigned char)tail;
        memcpy(iBufTemp,iBuf,iBufLen);
        for(i=0;i<8-tail;i++)
            iBufTemp[iBufLen+i]=FillItem;

        OutStrLen=(blockCount+1)*DES_BLOCKSIZE;
        SucessFlag=DesEncrypt(iBufTemp, oBuf,(blockCount+1)*DES_BLOCKSIZE,KeyDataArry[0], KeyDataArry[1], KeyDataArry[2]);
        free(iBufTemp);
        if(SucessFlag != 1) return 0; 
    }
    else
    {
        memset(oBuf,0,iBufLen);
        if(tail != 0) 
        {
            free(iBufTemp);
            return 0;
        }
        SucessFlag=DesDecrypt(iBuf, iBufTemp,blockCount*DES_BLOCKSIZE,KeyDataArry[2], KeyDataArry[1], KeyDataArry[0]);
        if(SucessFlag != 1)
        {
            free(iBufTemp);
            return 0;
        }
        FillItem=iBufTemp[iBufLen-1];
        FillFlag=FillItem;
        if(FillFlag > 8)
        {
        free(iBufTemp);
        return 0;
        }
        memcpy(oBuf,iBufTemp,iBufLen-FillFlag);
        oBuf[iBufLen-FillFlag]='\0';
        OutStrLen=iBufLen-FillFlag;
        free(iBufTemp);
    }
    
    return OutStrLen;
}

void TMdbCCryptDES::BINtoBinASCII(unsigned char * sSrc,unsigned char * sDes,int iLen)
{
    int i,temp;
    
    for(i=0;i<iLen;i++)
    {
        temp=sSrc[i]>>4;
        if(temp>9)
            sDes[i*2]=temp+'0'+7;
        else
            sDes[i*2]=temp+'0';
        temp=sSrc[i]&0x0f;
        if(temp>9)
            sDes[i*2+1]=temp+'0'+7;
        else
            sDes[i*2+1]=temp+'0';
    }
    sDes[2*i]=0;
}

void TMdbCCryptDES::BinASCIItoBIN(unsigned char * sSrc,unsigned char * sDes)
{
    int iLen,iLenHalf;
    
    unsigned char temp,temp1;

    iLen=strlen((const char *)sSrc);
    iLenHalf=strlen((const char *)sSrc)/2;
    for (int i=0;i<iLenHalf;i++)
    {
        temp=sSrc[2*i];
        if(temp>'9' || temp<'0')
            temp=(temp-'0'-7)%16;
        temp=temp<<4;
        temp1=sSrc[2*i+1];
        if(temp1>'9' || temp1<'0')
            temp1=(temp1-'0'-7)%16;
        else
            temp1-='0';
        sDes[i]=temp|temp1;
    }
    sDes[iLenHalf]=0;
    if(iLen%2==1)
    {
        temp=sSrc[iLen-1];
        if(temp>'9' || temp<'0')
            temp=(temp-'0'-7)%16;
        temp=temp<<4;
        temp1=0x00;        
                temp=temp|temp1;
        sDes[iLenHalf]=temp;
        sDes[iLenHalf+1]=0;
    }
}
